Every time I've ever written songs with a group of people or even one person... I've been pretty willing to compromise the lyrics of a song that I write for the sake of the group project... Unless the suggestions that they've offered up are horrible, then I'll just let them know that they're an idiot and we would move along with the writing process.

In a band situation though I think a lot of times other band members will offer up ideas just to seem like they're "doing their part". I understand it can be frustrating to have others want to change your lyrics up... but that's just something that comes with being in a band. You wouldn't want to play a song that you weren't content with just like they wouldn't want to play a song that they're not content with. The best thing to do is to address the issue as a group. Tell them that it bothers you and get it out... It's never good to hold stuff like that in and let it come to a boil. Let them know how you feel and maybe they'll be more likely to think twice about their lyric critiques and changes before they suggest them... rahter than just throwing everything out there.

A band writing process is a lot different than a solo writing process though... It's a lot less productive unless you really click with the other people... and in that case you rarely disagree heavily on lyrics...

I hate it when people offer up stupid ideas though... that's the worse. If you're going to change my lyrics, try not to change it to something gay